Turbocharger control
First Claim
Patent Images
1. A turbocharger comprising a compressor;
- and a fluid driven turbine drivingly coupled to said compressor, said turbine including a turbine housing having a fluid inlet portion and a generally scroll-shaped portion, a radially inwardly extending meridonal septum dividing said inlet and scroll-shaped portions into a pair of axially displaced primary fluid flow paths, wall means formed integrally with said turbine housing for closing a portion of the radially inner boundary of said primary paths and for defining a radially inwardly open secondary flow path in communication with said primary paths, and valve means disposed along the secondary flow path and controllably movable between a first position opening said secondary path to allow fluid flow through both said primary and secondary paths, and a second position substantially closing said secondary path to fluid flow.
0 Assignments
0 Petitions
Accused Products
Abstract
A variable flow geometry, meridionally divided turbine housing for use in an exhaust gas driven turbine of a turbocharger.
55 Citations
36 Claims
-
1. A turbocharger comprising a compressor;
- and a fluid driven turbine drivingly coupled to said compressor, said turbine including a turbine housing having a fluid inlet portion and a generally scroll-shaped portion, a radially inwardly extending meridonal septum dividing said inlet and scroll-shaped portions into a pair of axially displaced primary fluid flow paths, wall means formed integrally with said turbine housing for closing a portion of the radially inner boundary of said primary paths and for defining a radially inwardly open secondary flow path in communication with said primary paths, and valve means disposed along the secondary flow path and controllably movable between a first position opening said secondary path to allow fluid flow through both said primary and secondary paths, and a second position substantially closing said secondary path to fluid flow.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
13. A turbocharger comprising a compressor;
- and a fluid driven turbine drivingly coupled to said compressor, said turbine including a turbine housing having a fluid inlet portion and a generally scroll-shaped portion, a radially inwardly extending meridional septum dividing said inlet and scroll-shaped portions into a pair of axially displaced primary fluid flow paths, wall means formed integrally with said turbine housing for closing a portion of the radially inner boundary of said primary paths and having means extending radially inwardly therefrom for defining a pair of radially inwardly open secondary flow passages open to respective ones of said primary paths, and valve means disposed along the secondary flow passages and controllably movable between a first position opening said secondary passages to their respective primary paths to allow fluid flow both through said primary paths and secondary passages, and a second position substantially closing said secondary passages to fluid flow.
- View Dependent Claims (14, 15, 16)
-
17. A turbocharger comprising a compressor;
- and a fluid driven turbine drivingly coupled to said compressor, said turbine including a turbine housing having a fluid inlet portion and a generally scroll-shaped portion, a radially inwardly extending meridional septum dividing said inlet and scroll-shaped portions into a pair of axially displaced primary fluid flow paths, wall means formed integrally with said turbine housing for closing a portion of the radially inner boundary of said primary paths and having means extending radially inwardly therefrom for defining a pair of radially inwardly open secondary flow passages in communication with the primary paths, and valve means disposed along each of said secondary passages and controllably movable between a first position opening said secondary passages to fluid flow in respective ones of said primary paths to allow fluid flow both through said primary paths and secondary passages, and a second position uniformly and substantially closing said secondary passages to fluid flow.
-
18. A turbine housing for a turbomachine comprising a fluid inlet portion;
- a generally scroll-shaped portion joined to said inlet portion;
a radially inwardly directed meridional septum extending along said inlet and scroll portions to define a pair of axially displaced primary fluid flow paths;
wall means formed integrally with the housing for closing a portion of the radially inner boundary of said primary paths and for defining a radially inwardly open secondary flow path in communication with the primary paths; and
valve means disposed along the secondary flow path and controllably movable between a first position opening said secondary path to said primary paths to allow fluid flow both through said primary and secondary paths, and a second position substantially closing said secondary path to fluid flow. - View Dependent Claims (19, 20, 21)
- a generally scroll-shaped portion joined to said inlet portion;
-
22. In a meridionally divided turbine housing having a pair of axially displaced primary flow paths formed along a fluid inlet portion and a generally scroll-shaped portion, apparatus for varying the housing fluid flow geometry comprising wall means fixed with respect to the turbine housing and forming a relatively short, radially inwardly open secondary fluid flow path open to said primary paths;
- and valve means disposed along said secondary path and controllably movable between a first position opening said secondary path to allow fluid flow both through said primary and secondary paths, and a second position substantially closing said secondary path to fluid flow.
- View Dependent Claims (23, 24)
-
25. A method of controlling fluid flow through a turbine housing having a fluid inlet portion and a generally scroll-shaped portion, comprising the steps of dividing said inlet and scroll portions with a radially inwardly extending meridional septum to form a pair of axially displaced primary flow paths;
- closing the radially inner boundary of a portion of said primary paths with wall means fixed with respect to the turbine housing to form a radially inwardly open secondary flow path in communication with said primary paths; and
controllably adjusting the valve means disposed along said secondary path between a first position opening said secondary path to allow fluid flow both through said primary and secondary paths, and a second position substantially closing said secondary path to fluid flow to allow unrestricted fluid flow through said primary paths. - View Dependent Claims (26, 27, 28)
- closing the radially inner boundary of a portion of said primary paths with wall means fixed with respect to the turbine housing to form a radially inwardly open secondary flow path in communication with said primary paths; and
-
29. A method of controlling fluid flow through a turbine housing having a fluid inlet portion and a generally scroll-shaped portion, comprising the steps of dividing said inlet and scroll portions with a radially inwardly extending meridional septum to form a pair of axially displaced primary flow paths;
- closing the radially inner boundary of a portion of said primary paths with wall means formed integrally with the turbine housing to form a pair of radially inwardly open secondary flow passages in communication with respective ones of said primary paths; and
controllably adjusting valve means disposed along said secondary passages between a first position opening said secondary passages to fluid flow to allow fluid flow both through said primary paths and secondary passages, and a second position substantially closing said secondary passages to fluid flow to allow unrestricted fluid flow only through said primary paths.
- closing the radially inner boundary of a portion of said primary paths with wall means formed integrally with the turbine housing to form a pair of radially inwardly open secondary flow passages in communication with respective ones of said primary paths; and
-
30. In a meridionally divided turbine housing having a pair of axially displaced primary fluid flow paths formed along a fluid inlet portion and a generally scroll-shaped portion, a method of varying the housing fluid flow geometry comprising the steps of closing the radially inner boundary of a portion of the primary paths with wall means formed integrally with the turbine housing to form a relatively short, radially inwardly open secondary fluid flow path communicating with said primary paths;
- and controllably adjusting valve means disposed along said secondary path between a first position opening said secondary path to allow fluid flow both through said primary and secondary paths, and a second position substantially closing said secondary path to fluid flow to allow unrestricted fluid flow only through the primary paths.
- View Dependent Claims (31, 32)
-
33. A turbocharger comprising a compressor;
- and a fluid driven turbine drivingly coupled to said compressor, said turbine including a turbine housing having a fluid inlet portion and a generally scroll-shaped portion, a radially inwardly extending meridional septum dividing said inlet and scroll-shaped portions into a pair of axially displaced primary fluid flow paths, wall means for closing a portion of the radially inner boundary of said primary paths and defining a radially inwardly open secondary flow path in communication with said primary paths, and valve means including a sleeve mounted on the turbine housing along said secondary path and having flow openings to permit fluid flow through said sleeve and secondary path, and a valve insert movably carried within said sleeve and controllably movable between a first position opening said sleeve and secondary path to allow fluid flow through said primary and secondary paths, and a second position limiting fluid flow through said sleeve and secondary path.
-
34. A turbocharger comprising a compressor;
- and a fluid driven turbine drivingly coupled to said compressor, said turbine including a turbine housing having a fluid inlet portion and a generally scroll-shaped portion, a radially inwardly extending meridional septum dividing said inlet and scroll-shaped portions into a pair of axially displaced primary fluid flow paths, wall means for closing a portion of the radially inner boundary of said primary paths and having means extending radially inwardly therefrom defining a pair of radially inwardly open secondary flow passages open to respective ones of said primary paths, and valve means including a sleeve mounted on the turbine housing along said secondary passages and having flow openings disposed in each of said passages to permit fluid flow through said sleeve and said secondary passages, and a valve insert movably carried within said sleeve and controllably movable between a first position opening said sleeve flow openings and secondary passages to their respective primary paths to allow fluid flow through said primary paths and secondary passages, and a second position limiting fluid flow through said sleeve flow openings and secondary passages.
- View Dependent Claims (35)
-
36. A turbocharger comprising a compressor;
- and a fluid driven turbine drivingly coupled to said compressor, said turbine including a turbine housing having a fluid inlet portion and a generally scroll-shaped portion, a radially inwardly extending meridional septum dividing said inlet and scroll-shaped portions into a pair of axially displaced primary fluid flow paths, wall means for closing a portion of the radially inner boundary of said primary paths and having means extending radially inwardly therefrom defining a pair of radially inwardly open secondary flow passages, and valve means including a sleeve mounted on the housing along each of said secondary passages and having flow openings disposed in each of said passages to permit fluid flow through said sleeve and said passages, and a valve insert movably carried within said sleeve and controllably movable between a first position opening said sleeve flow openings and secondary passages to fluid flow in respective ones of said primary paths to allow fluid flow through said primary paths and secondary passages, and a second position uniformly limiting fluid flow through said sleeve flow openings and secondary passages.
Specification